14. Huperzia selago (Linnaeus) Bernhardi ex Schrank & Martius, Hort. Reg. Monac. 3. 1829.
小杉兰石杉 xiao shan lan shi shan
Lycopodium selago Linnaeus, Sp. Pl. 2: 1102. 1753; L. abietiforme S. F. Gray; L. densum Lamarck, nom. illeg. superfl.; Mirmau selago (Linnaeus) H. P. Fuchs; Plananthus selago (Linnaeus) P. Beauvois; Urostachys selago (Linnaeus) Herter.
Plants terrestrial. Stem erect or ascending, 16-25 cm, 2-3 mm in diam. at middle, together with leaves 11-16 mm wide, 3 or 4 times dichotomously branched, upper portion often with bulbils. Leaves dense, angled upward or attached at right angles with stem, lustrous, lanceolate, nearly as wide at base as middle, straight, 7-10 × 1.4-1.8 mm, leathery to papery, both surfaces glabrous, midrib indistinct abaxially, slightly distinct adaxially, base truncate, decurrent, sessile, margin straight and not crispate, entire, apex acute. Sporophylls homomorphic with trophophylls; sporangia not visible or visible on both sides of sporophylls, yellowish, reniform.
Alpine meadows, rock crevices, forests, stream banks; 1900-2300 m. Jilin, Xinjiang [America, Asia, Europe, Pacific islands].
The leaf margins of Huperzia selago are involute, and its leaf apex is acuminate.